Multi-tackle arrangement method for steering field

A method of arrangement and technology of pulleys, applied in the direction of overhead lines/cable equipment, etc., can solve problems such as the inability to install pulleys, achieve the effects of reducing safety hazards, uniform force, and improving safety

Active Publication Date: 2020-02-04
SICHUAN POWER TRANSMISSION & TRANSFORMATION CONSTR
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] An object of the present invention is to provide a method for arranging multiple pulleys in the steering field to solve the problem in the prior art that the number of pulleys and the relative positions of the pulleys cannot be set flexibly, sta

Method used

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  • Multi-tackle arrangement method for steering field
  • Multi-tackle arrangement method for steering field
  • Multi-tackle arrangement method for steering field

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0082] like figure 1 A method for arranging multiple tackles in a steering field as shown, comprising the following steps:

[0083] Step 1: Determine the position of the steering field according to the positions of the traction field and the tension field, and measure the steering angle α;

[0084] By combining the positions of the traction field and the tension field, determine the position of the steering field according to the obstacles and areas that need to be avoided; after the steering field is confirmed, measure the steering angle α;

[0085] Step 2: Determine the number of tackles in the steering field according to the steering angle α;

[0086] After obtaining the steering angle α, determine the number of pulleys in the steering field according to the size of the steering angle α. In order to make the envelope angle not greater than 30°, the relationship between the number n of pulleys and the steering angle α satisfies the relation And the value of n is rounded up;...

Embodiment 2

[0092] like Figure 2 to Figure 4 As shown, on the basis of Embodiment 1, when 30°≤α≤60°, the number of the tackles is two, and the two tackles are arranged symmetrically about the angle bisector of the supplementary angle γ of the steering angle α; When 60°≤α≤90°, the number of the blocks is three, the centers of the three blocks form an isosceles triangle, and the angle bisector of the angle γ is collinear with the axis of symmetry of the isosceles triangle; When 90°≤α≤120°, the number of the pulleys is four, the centers of the four pulleys form an isosceles trapezoid, and the angle bisector of the angle γ is collinear with the symmetry axis of the isosceles trapezoid.

[0093] The above settings enable the staff to quickly determine the overall position and layout of each tackle when arranging multiple tackles in the steering yard, and further improve the efficiency of the steering yard layout.

Embodiment 3

[0095] like figure 2 As shown, when the number of tackles is two, step three specifically includes the following steps:

[0096] (S11) The first block and the second block are arranged symmetrically about the angle bisector of the supplementary angle γ;

[0097] (S12) adjust the positions of the first tackle and the second tackle so that the center of circle of the first tackle is O 1 and the center O of the second tackle 2 The distance d between is:

[0098]

[0099] Among them, d AB is the center O of the first tackle 1 and the center O of the second pulley 2 The distance between the midpoint B of the connecting line and the measurement point A, r is the radius of the pulley. d AB The value of is determined artificially according to the actual working condition and the location of the measurement point.

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Abstract

The invention discloses a multi-tackle arrangement method for a steering field, comprising the following steps: step 1, determining the position of the steering field according to the positions of a traction field and a tension field, and measuring a steering angle alpha; step 2, determining the number of tackles in the steering field according to the steering angle alpha; and step 3, determiningthe positional relationship of each tackle according to the steering angle alpha and the number of tackles. After the steering angle is determined, the number of tackles can be quickly determined andthe relative position of each tackle can be further determined, so that when the steering field is arranged, only a small number of individual tackles need to be carried, which significantly reduces the transportation and installation costs. The steering field can be arranged flexibly and normatively according to the actual steering angle. On the premise of meeting the requirements of special terrains in mountainous areas, the envelop angles of the tackles are equal, and the tackles are stressed uniformly, so that the operational safety of the steering field is improved, and the tackles and cables are effectively protected.

Description

technical field [0001] The invention relates to the technical field of electric power erection engineering, in particular to a method for arranging multiple pulleys in a steering field. Background technique [0002] Most of the large-scale hydropower stations in Southwest China are built in deep mountains and valleys. Correspondingly, more and more power transmission lines are built in high mountains. [0003] Tension unwinding is a erection construction method that keeps the laid wires at a certain tension during the whole process of erecting the wires and is in an overhead state from the ground. According to the line acceptance regulations of the State Grid Corporation of China, tension release must be used for power line projects above 110KV. The optical cable or wire is not allowed to touch the ground during the payout process. [0004] With the development and construction of southwest hydropower, there are more and more transmission lines for "West-to-East Power Trans...

Claims

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Application Information

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IPC IPC(8): H02G1/04
CPCH02G1/04
Inventor 李刚何朝明景文川王毅黄正煌刘新川李崇斌陈玉博余游黄鹏易实黄凯周佃兵
Owner SICHUAN POWER TRANSMISSION & TRANSFORMATION CONSTR
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